Peter Foster Causey (January 11, 1801 – February 15, 1871) was an American merchant and politician from Milford, in Kent County, Delaware.

His family lived in Easton, Maryland for a time, but returned to Delaware in 1815, settling on North Walnut Street in Milford.

The Causey family owned a large flour mill and were successful merchants, taking advantage of the many business opportunities in Milford at the time.

On the other side of the ledger, by 1861 Delaware College was forced to close due to a lack of funds, aggravated by a brutal unsolved murder on the campus.

Public education has been the theme of much debate in our legislative halls for years, he remarked, and yet each succeeding session has ended in little or no alteration for the better.

The tiny school districts run by committees elected by the residents most hostile to taxation simply were not working.